CN1968626A

CN1968626A - Seat

Info

Publication number: CN1968626A
Application number: CNA2004800433318A
Authority: CN
Inventors: E·布罗伊宁
Original assignee: Vitra Patente AG
Current assignee: Vitra AG
Priority date: 2004-06-14
Filing date: 2004-06-14
Publication date: 2007-05-23
Also published as: US20090121534A1; EP1758485A1; WO2005120292A1

Abstract

The invention relates to a seat consisting of a single-component body (1) comprising an essentially horizontally arranged seat element (11), an upwardly projecting backrest (12) applied to the rear of the seat element (11), and two front legs (10, 10') extending at the front of the seat (11). The two separated rear legs (2') are to be inserted and fixed in the body (1), said legs being provided with a non-rotationally symmetrical insertion part (22'). An externally accessible opening for positively inserting the insertion parts (22') is provided on the body (1), respectively laterally in the region of the rear seat end (110). Said insertion parts (22') and openings are provided with an enlarged surface in relation to the core diameters thereof. The insertion part (22') is embodied as an insertion tenon (22') extending from the rear leg (2') and having an essentially elliptical cross-section which conically tapers off in the direction of the free end. The openings oriented towards the sides of the seat have an elliptical cross-section which is complementary to the insertion tenons (22') and enlarges towards the entrance of the openings. The insertion tenons (22') comprise a circular peripheral outer toothing (220') that extends preferably in the axial direction of the insertion tenons (22') and openings. The inner surface of said openings is provided with an inner toothing that complements the outer toothing (220') of the insertion tenons (22').

Description

Seat

Technical field

The present invention relates to a kind of seat, it comprises the main body and the additional back leg of one.Main body comprises the reclinate foreleg that extends towards the bottom in the folding corner region of leading section of horizontally disposed in principle seat portion, the backrest that extends at present portion rear portion and present portion.Seat can be equipped with or not be equipped with handrail.The present invention particularly is devoted to improve the stability of this class seat structure.

Background technology

By the seat of the described type of international outward appearance registration DM/022 613 known beginnings, wherein connect a leg support that is positioned at below the support twisting on the main body of one, described main body comprises a seat portion, backrest and foreleg.On the middleware that back leg is connected of leg support a support plate is set, this support plate is used for stubborn being connected under the portion.The handrail of independent bending is twisted on the one hand and is connected on the back side of backrest, twists on the other hand to be connected under the portion.This structure needs wide variety of materials and mounting cost in the mill.DE 202 19 476 U1 show a kind of seat, and it has a main body, and this main body comprises a horizontally disposed seat portion, and this one carries out the transition to a backrest that protrudes upward at the rear portion.Foreleg extends towards the bottom from the front portion of seat portion.Can be used to insert the extension on the back leg from the approaching grafting accommodation section of seat back in its side zones, being provided with one below the main body.

Summary of the invention

Prior art based on above-mentioned the objective of the invention is to, the seat of the intensity with improvement of the described type of suggestion beginning.When this seat should be made in a large number effectively with as far as possible little mounting cost manufacturing and the structure that has handrail or do not have handrail is provided.

Seat has the main body of an one as main member, and it comprises:

-one horizontally disposed in principle seat portion;

The backrest that protrudes upward that extend at the rear portion of-one present portion;

-the foreleg that extends towards the bottom from the front portion of seat portion; And

The back leg that extends towards the bottom of-insertion body interior.

There is and is provided with the insert of non-rotating symmetry in each back leg as independent member.On each side direction of main body the region memory of back seat portion end one can be from the outside approaching, be used for the opening that shape is inserted insert sealedly.Insert and opening are provided with the surface that enlarges for the core diameters (core diameter) with respect to them.

Below feature relate to specific embodiments of the invention: insert constitute extend from back leg, have the insertion pin of oval-shaped cross section in principle, the cross section that wherein inserts pin dwindles to taper gradually towards the free end direction.Opening has the in principle oval-shaped cross section complementary with inserting pin, and described cross section is towards the Way in expansion of opening.Opening is towards the side of seat.Insert pin have on its outer surface one around outer toothed portion, this outer toothed portion is preferably extended on the axis direction that inserts pin and opening.Opening have on the surface within it one with the internal tooth portion of the outer toothed portion complementation of inserting pin.

Back leg comprises the spindlelegs support; In the arc supporting portion that the upper end of leg support is extended; And with arc supporting portion adjacency, under the insertion state horizontally disposed in principle insertion pin.

Back leg upwards carries out the transition to a handrail in having the seat scheme of handrail.Such back leg comprises: one constitutes the connector of the extension of leg support, and described connector extends in the upper end of leg support with its bottom; One under the upper end of connector insertion state that extend, at back leg horizontally disposed in principle handrail bottom; An independent handrail top wherein is set, and this handrail top is fixed on the handrail bottom.

Seat portion constitutes shell structure and have the sidewall edge of a projection respectively on the border of its side direction.Has the back mural margin of a projection at boundary thereafter.Sidewall edge carries out the transition to the back mural margin with the transitional region of a preferred arc respectively.In the folding corner region of rearward end present portion towards above a side on the connector of housing shape is set, described connector surrounds and is parallel to the opening that the back mural margin extends in principle.Connector is being limited by rear wall on the direction of the inside of seat portion.Opening preferably feeds in sidewall edge and the back transitional region between the mural margin.Can be from a outside approaching screwed hole is set in rear wall.Insert pin and have a cavity in inside.One is stretched out longitudinally to the male portion of the axis setting of the inserting pin inner surface from cavity.Blind hole with internal thread is set in male portion, and wherein blind hole overlaps with screwed hole in the rear wall of connector under the insertion state.

Seat comprises the rib grid that present portion is provided with on the leading section of present portion on the side of top.The rib grid comprises the longitudinal rib that separates each other of the preceding border setting that is parallel to a portion in principle, and described longitudinal rib stretches out with leaning forward.This outer rib grid comprises the transverse ribs of stretching out from seat portion that separates each other transverse to the longitudinal rib setting.

The cushion that sandwich shape constitutes comprises:

In-present the portion that waits to foam, that between sidewall edge, expand, forward cross the rib grid and backward with the following film of rear wall edges abut, described film down flows in first space that is formed between longitudinal rib and the transverse ribs when foaming;

-be parallel in principle down film setting and the upper film that overlaps in principle with following film, described upper film afterwards has a profile in the air gap between connector and seat portion respectively in the folding corner region, and connector embeds in this profile; And

-at the cushioning foam material that is provided with between film and the upper film down.

Seat portion has a through hole at the rearward end place, and backrest comprises:

-two vertical arch portion of stretching out are extended in the folding corner region of the rearward end of the present portion in their bottom;

-one with two vertical arch portion in transverse arcuate portion that their upper end is connected;

-one backing cushion of waiting to put on a suit of armour in two vertical arch portion and transverse arcuate portion; And

-clamping bar, the present portion of this clampings bar crosses the through hole extension and is inserted in the frame of lower end of backing cushion on a side of top.

Description of drawings

Elaborate the embodiment of seat of the present invention below by means of accompanying drawing.

The front view of Figure 1A seat of the present invention, the back leg with first scheme does not have handrail;

Figure 1B is according to the side view of the seat of Figure 1A;

Fig. 1 C is according to the perspective view of the seat of Figure 1A;

The front view of Fig. 2 A seat of the present invention has the back leg of alternative plan, has handrail;

Fig. 2 B is according to the side view of the seat of Fig. 2 A;

Fig. 2 C is according to the perspective view of the seat of Fig. 2 A;

The perspective view of the back leg of Fig. 3 A first scheme does not have handrail;

Fig. 3 B is according to the back leg of Fig. 3 A, conversion the visual angle;

The perspective view of the back leg of Fig. 4 A alternative plan has handrail;

Fig. 4 B is according to the back leg of Fig. 4 A, conversion the visual angle;

The partial sectional view of the amplification of the details X2 of Fig. 4 C Fig. 4 B;

Fig. 4 D Fig. 4 C sells vertical sectional view longitudinally along inserting;

The vertical sectional view of Fig. 4 E Fig. 4 C transverse to the insertion pin;

The vertical sectional view of the amplification of the details X1 in the conduct butt joint zone among Fig. 5 A Fig. 1 C;

The vertical sectional view of Fig. 5 B Fig. 2 C transverse to connector;

The details X3 of the amplification of Fig. 5 C Fig. 5 B has the contraction flow region of the taper that extends internally;

The back leg of Fig. 6 A alternative plan, have partly cut-away, near the handrail the butt joint zone of Fig. 5 A;

Fig. 6 B is according to the back leg under mated condition of Fig. 6 A;

The perspective plan view of the back leg of Fig. 7 A alternative plan has independent handrail top;

The view that the handrail top of Fig. 7 B Fig. 7 A is watched from the below;

Fig. 7 C fills frothy handrail top;

The vertical longitudinal sectional view of the handrail of Fig. 8 A Fig. 6 A;

The details X4 of the amplification of Fig. 8 B Fig. 8 A;

Fig. 9 A is of the present invention to have the side view that the part of the seat of the back leg of alternative plan and handrail is cut open;

Fig. 9 B has the seat of Fig. 9 A of seat cushions;

The details X5 of the amplification of Fig. 9 C Fig. 9 A;

The details X6 of the amplification of Fig. 9 D Fig. 9 A;

The details X7 of the amplification of Fig. 9 E Fig. 9 B;

The details X8 of the amplification of Fig. 9 F Fig. 9 B.

The specific embodiment

Following regulation is applicable to following specification.If in order to illustrate the clear Reference numeral that comprises, still the declaratives under are not directly set forth, and please refer to previous description of drawings so in an accompanying drawing.For cause clearly, the Reference numeral of the member of repetition omits in ensuing accompanying drawing mostly, finds out the member that repeats as long as can know in the accompanying drawings.

Figure 1A to 1C

Main body 1 comprises horizontally disposed seat portion 11; The rearward end 110 of present portion 11 is sentenced the backrest 12 of its vertical arch portion 120,120 ' extension; And foreleg 10,10 reclinate in the folding corner region of the leading section 111 of present portion 11, that extend towards the bottom '.Backrest 12 has the shape by ergonomic design, this shape by vertical arch portion 120,120 ' profile produce, this profile at first extends upward with its bottom 121,121 ' slightly with leaning forward precipitously, then with arc-shaped transition to a sweptback rectilinear section and end 122,122 ' locate is crooked backward with arc once more thereon.One transverse arcuate portion 123 connects two vertical arch portion on top.

Seat has a structure with respect to its longitudinal axis mirror image symmetry, thus in this accompanying drawing system not only under the installment state and also with state that main body 1 is separated under first scheme that illustrates left back leg 2 ' with the right rear leg 2 mirror image symmetries of first scheme that only under mated condition, illustrates.Downwards towards its bottom 200,200 ' diminishing leg support 20,20 ' the upper end arc carry out the transition to arc supporting portion 21,21 ', insert

22,22 ' with leg support 20,20 ' formation one obtuse angle and in described arc supporting portion 21,21 ' locate extension.

Insert pin

22,22 ' outer surface be provided with outer toothed portion 220,220 '.Seat portion 11 have two sidewall edge that protrude upward 112,112 '.Seat portion 11 is limited by a back mural margin 113 that protrudes upward at the rear portion, sidewall edge 112,112 ' wherein with the transitional region 114,114 of arc ' carry out the transition to back mural margin 113, thus seat portion 11 has a hull shape.

In the folding corner region of the rearward end 110 of the present portion 11 of two connectors 14,14 ' be provided with, at this folding corner region madial wall edge 112,112 ' crossing with back mural margin 113.Back leg 2,2 ' achieve a butt joint main body 1 place's shape sealedly, this be by will insert

22,22 ' insert connector 14,14 ' opening 141 in and and then will insert by means of screw 19 sell 22,22 ' be fixed on connector 14,14 ' on.There is a rib grid 13 at leading section 110 places of present portion 11, its by two sidewall edge 112,112 ' between the longitudinal rib 130 that extends and constitute perpendicular to the transverse ribs 131 of described longitudinal rib setting.Rib grid 13 is used for fixing with grappling cushion 5 and is used for reinforced seat portion 11 in addition.

By for example further stabilizing base of metallic plate portion 11 of reinforced embedded member 16 is installed, described metallic plate is parallel to that longitudinal rib 130 is arranged on the rib grid 13 and is fixed thereon by means of screw 19.Thisly also can bear high capacity, and not buckle by the stable seat portion 11 of dual mode.One through hole 150 extends below a passage 15.In order fixedly to put on a suit of armour the backing cushion 4 on backrest 12, clamp in the frame 41 on the bottom that bar 40 is inserted in backing cushion 4, then pass through hole 150 and guide and be fixed on the passage 15, thereby two ends of clamping bar 40 are stretched out by passage and crossed through hole 150 and extend from the below.In order to carry out Height Adjustment, foreleg 10,10 ' the anterior sliding part 102 in bottom 100,100 ' be provided with, back leg 2,2 ' bottom 200,200 ' the be provided with sliding part 202 at rear portion.In order to protect adjustment face, felt 103 before the side towards the bottom of anterior sliding part 102 covers, the side towards the bottom of the sliding part 202 at rear portion covers the felt 203 at a rear portion.

Fig. 2 A to 2C

Seat shown here with only be in the difference of the seat shown in Figure 1A to 1C heteroid back

leg

2,2 '.Describe in detail among the accompanying drawing 3A to 4E of the back leg 2,2 ' below of first and second scheme.

Fig. 3 A to 4E

The back leg 2,2 ' respectively of first scheme and alternative plan have a leg support 20,20 ', an arc supporting portion 21,21 ' and one

insert pin

22,22 '.Leg support 20,20 ' from its bottom 200,200 ' extend upward.Arc supporting portion 21,21 ' with leg support 20,20 ' upper end 201,201 ' adjacency.Leg support 20,20 ' cross section have the shape of rectangle, this rectangle has the bight of remarkable rounding, wherein leg support 20,20 ' the width on the surface of extending, the side circle limit of the portion 11 that under installment state, is parallel to upwards enlarge continuously, and leg support 20,20 ' sensing before and point to after the width on surface keep constant extending axially of leg support.Leg support 20,20 ' in the upper end 201,201 ' a sentence obtuse angle carry out the transition to arc supporting portion 21,21 ', the cross section of this arc supporting portion flattens gradually, so as arc supporting portion 21,21 ' to insert

22,22 ' transition position have oval in shape.

Arc supporting portion 21,21 ' with leg support 20,20 ' become obtuse angle.At the

insertion pin

22,22 of arc supporting portion 21,21 ' locate to extend ' have towards the diminishing oval-shaped cross section of free end direction

taper.Insert pin

22,22 ' outer surface be provided with around outer toothed portion 220,220 ', described outer toothed portion by longitudinally to insert

22,22 ' the rib axis setting, that separate each other constitute, thereby produce outer toothed portion 220,220 ' the profile of undulate on cross

section.Insert pin

22,22 ' have cavity 221 in inside so that saving in weight, described cavity from

insert pin

22,22 ' the end face 224s cross its whole axial length until stretch into arc supporting portion 21,21 ' in.In cavity 221 from its inner surface stretch out one be parallel to insert

22,22 ' the longitudinal axis male portion 222 elongated, that have oval cross section of extending, in this male portion, have one from

insert pin

22,22 ' end face 224 come-at-able blind holes 223.

The

back leg

2,2 of alternative plan ' with respect to the

back leg

2,2 of first scheme ' prolonged a connection piece 23,23 ', described connector as leg support 20,20 ' rectilinear extension with its bottom 230,230 ' leg support 20,20 ' upper end 201,201 ' locate to extend.Connector 23,23 ' upper end 231 in abutting connection with vertical handrail bottom 24,24 with it ', described handrail bottom back leg 2,2 ' installment state under be horizontally disposed with.One on handrail top 3,3 ' comprise under installment state, be parallel to the

longitudinal part section

30,30 on the top of the seat portion circle limit of side direction extending ', its at the rear portion with less obtuse angle to the

transverse part section

31,31 on a top '.The longitudinal part section 240,240 of handrail bottom 24,24 ' have one and longitudinal part section 30, the 30 ' matched bottom on top ' and one with the transverse part section 241,241 of transverse part section 31, the 31 ' matched bottom on top '.

Fig. 5 A to 6B

That extend in two present portions 11 and with the

connector

14,14 of back mural margin 113 adjacency ' have identical construction.They have the shape of circular shell, have one from the outside in the side come-at-able opening 141 and an outline, this outline has one towards the back oval-shaped cross section that dwindles prejudicially of mural margin 113.Opening 141 vertical camber member 120,120 ' under feed sidewall edge 112,112 ' with the back transitional region 114,114 of the arc between the mural margin 113 ' in.Opening 141 is inwardly limited by a rear wall 142 respectively, and a screwed hole 143 is set in rear wall 142.The oval-shaped cross section of opening 141 towards rear wall 142 tapered reduction and with

insert pin

22,22 ' cross section corresponding.The inner surface of opening 141 be provided with an internal tooth portion 140,140 ', this internal tooth portion with

insert pin

22,22 ' outer toothed portion 220,220 ' complementally constitute.

Postbrachium 2,2 ' (see Fig. 6 A and 6B) when being docked on the main body 1 at first will be inserted pin 22 ' insert connector 14 ' opening 141 in.Insert pin 22 ' outer toothed portion 220 ' and connector 14 ' internal tooth portion 140 ' be meshed, insert pin 22 ' shape thus and be fixed sealedly, prevent to reverse.The tooth portion 220 of engagement ', 140 ' significantly enlarged the surface and caused power distribution in the zone of broad, so that the torque of control action on working of plastics.Simultaneously, the blind hole 223 in inserting the male portion 222 of pin 22 ' interior with connector 14 ' rear wall in screwed hole 143 overlap.Next for the fixing pin 22 ' screw 19 is passed screwed hole 143 guiding of inserting, this screw embeds in the internal thread of blind hole 223 at the rear portion of screwed hole.

Fig. 7 A to 8B

In order to reduce the cooling in weight and the quickening injection moulding manufacture process, handrail bottom 24 housing shapes constitute.In order to make it have enough stability, so be provided with the following rib 242 that is used to strengthen in inside.Be similarly upward rib 32 reinforcements of handrail top 3 utilizations that housing shape constitutes, the described rib of going up constitutes second space 37 each other.Handrail top 3 is filled with foamed material 36, and it embeds in second gap 37 when foaming and is divided in the 3 inner equally distributed unit on handrail top.Foamed material 36 flows in the groove 35 and after solidifying when foaming and is fixed on the handrail top 3.In handrail bottom 24, have two pins that raise up 243 and handrail top 3 in the inserting groove 33 of two housing shapes of existence, described inserting groove has and pin 243 corresponding pin-and-holes 34.Handrail bottom 24,24, handrail top 3,3 ' be placed on ' go up so that fix is wherein sold 243 and is embedded in the pin-and-holes 34 and fixing by barb-shaped locking element 39.In order to make that pin-and-hole 34 keeps opening wide when the frothing foam material 36, so on housing 33, place a lid 38.

Fig. 9 A to 9F

Cushion 5 sandwich shape constitute.Cushioning foam material 52 embeds between upper film 51 and the following film 50.Following film 50 have one on the edge around following perforation 500 and upper film 51 have on the edge around on bore a hole 510.When foaming cushioning foam material 52 for example down and on bore a hole in 500,510 so that after solidifying, be fixed on the upper and lower film 50,51.On its upper surface on upper film 51 and back bight connector 14,14 ' adjacency under the insertion state of cushion 5, be shaped one with the profile 501 of connector 14,14 ' complementation.Connector 14,14 ' from seat portion 11s is roughly stretching out towards the direction of back mural margin 113, thus present portion 11 and connector 14,14 ' between formation one gap.The folding corner region of upper film 51 is pushed in the described gap, until connector 14,14 ' lower section embed in the profile 501 of upper film 51.In the present portion of following film 50 foaming and flow into by in vertical and first space 132 that transverse ribs 130,131 constitutes.Fixed by longitudinal rib 130 at the following film 50 of curdled appearance, thereby prevent on horizontal direction backward and moving in vertical direction, described longitudinal rib 130 slightly stretches out from seat portion 11 with leaning forward, and transverse ribs 131 stops being displaced sideways of film 50 down.

Claims

1. seat comprises:

A) main body of one (1) has

Aa) horizontally disposed in principle seat portion (11);

Ab) backrest that protrudes upward (12) of the rear portion of present portion (11) extension;

Ac) foreleg (10,10 ') that extends towards the bottom from the front portion of seat portion (11);

B) insert the interior back leg (2,2 ') that extends towards the bottom of main body (1), it is characterized in that,

C) there is and is provided with the insert (22,22 ') of non-rotating symmetry in each back leg (2,2 ') as independent member;

D) on each side direction of main body (1) the region memory of the rearward end (110) of present portion one can be from the outside approaching, be used for the opening (141) that shape is inserted insert (22,22 ') sealedly; And

E) insert (22,22 ') and opening (141) are provided with the surface of expansion for their core diameters.

2. seat as claimed in claim 1 is characterized in that,

A) insert (22,22 ') constitute extend from back leg (2,2 '), have the insertion pin of oval-shaped cross section (22,22 ') in principle, the cross section that wherein inserts pin (22,22 ') dwindles to taper gradually towards the free end direction;

B) opening (141) has the in principle oval-shaped cross section complementary with inserting pin (22,22 '), and described cross section is towards the Way in expansion of opening (141); And

C) opening (141) is towards the side of seat.

3. seat as claimed in claim 1 or 2 is characterized in that,

A) insert pin (22,22 ') have on its outer surface one around outer toothed portion (220,220 '), this outer toothed portion is preferably extended on the axis direction that inserts pin (22,22 ') and opening (141); And

B) opening (141) has an internal tooth portion (140,140 ') complementary with the outer toothed portion (220,220 ') of inserting pin (22,22 ') on the surface within it.

4. as at least one described seat of claim 1 to 3, it is characterized in that back leg (2,2 ') comprising:

A) spindlelegs support (20,20 ');

B) the arc supporting portion (21,21 ') that locates to extend in the upper end (201,201 ') of leg support (20,20 '); And

C) with arc supporting portion (21,21 ') adjacency, under the insertion state horizontally disposed in principle insertion pin (22,22 ').

5. as at least one described seat of claim 1 to 4, it is characterized in that back leg (2,2 ') upwards carries out the transition to a handrail (24,3).

6. as at least one described seat of claim 1 to 5, it is characterized in that back leg (2,2 ') comprising:

A) constitute the connector (23,23 ') of the extension of leg support (20,20 '), described connector is located in the upper end (201,201 ') of leg support (20,20 ') to extend with its bottom (230,230 ');

B) locate to extend in the upper end (231,231 ') of connector (23,23 '), under the insertion state of back leg (2,2 ') horizontally disposed in principle handrail bottom (24,24 '); Wherein:

C) an independent handrail top (3,3 ') is set, this handrail top is fixed on the handrail bottom (24,24 ').

7. as at least one described seat of claim 1 to 6, it is characterized in that seat portion (11) constitutes shell structure and for this reason:

A) on the border of its side direction, has the sidewall edge (112,112 ') of a projection respectively; And

B) has the back mural margin (113) of a projection at boundary thereafter; Wherein

C) sidewall edge (112,112 ') carries out the transition to back mural margin (113) with the transitional region (114,114 ') of a preferred arc respectively.

8. as at least one described seat of claim 1 to 7, it is characterized in that,

A) present portion (11) is provided with the connector (14,14 ') of housing shape on a side of top in the folding corner region of rearward end (110), and described connector surrounds and is parallel to the opening (141) that back mural margin (113) extends in principle;

B) connector (14,14 ') is being limited by rear wall (142) on the direction of the inside of seat portion;

C) opening (141) preferably feeds in the transitional region (114) between sidewall edge (112,112 ') and back mural margin (113);

D) can be from a outside approaching screwed hole (143) is set in rear wall (142);

E) insert pin (22,22 ') and have a cavity (221) in inside;

F) male portion (222) that is provided with longitudinally to the axis that inserts pin (22,22 ') is stretched out from the inner surface of cavity (221); And

G) blind hole (223) with internal thread is set in male portion (222), wherein blind hole (223) overlaps with screwed hole (143) in the rear wall (142) of connector (14,14 ') under the insertion state.

9. as at least one described seat of claim 1 to 8, it is characterized in that seat comprises:

A) leading section (111) of present portion on a side of top of present portion (11) is gone up the rib grid (13) that is provided with; Comprise

Aa) be parallel to the longitudinal rib that separates each other (130) that the preceding border of a portion (11) is provided with in principle, described longitudinal rib stretches out with leaning forward;

Ab) transverse to the transverse ribs (131) of stretching out from seat portion (11) of separating each other of being provided with of longitudinal rib (130);

B) cushion of sandwich shape formation comprises:

Ba) wait to foam in the present portion (11), that between sidewall edge (112,112 '), expand, forward cross rib grid (13) and backward with the following film (50) of back mural margin (113) adjacency, described film down flows in first space (132) that is formed between longitudinal rib (130) and the transverse ribs (131) when foaming;

Bb) be parallel to upper film (51) that following film (50) is provided with and that overlap in principle with following film in principle, described upper film has a profile that is positioned at the air gap between connector (14,14 ') and the seat portion (11) respectively in the folding corner region of back, connector (14,14 ') embeds in this profile; And

Bc) at the cushioning foam material (52) that is provided with between film (50) and the upper film (51) down.

10. as at least one described seat of claim 1 to 9, it is characterized in that seat portion (11) has a through hole (150) at the rearward end place, and backrest (12) comprising:

A) two vertical arch portion of stretching out (120,120 ') are extended in the folding corner region of the rearward end (110) of their bottom (121,121 ') present portion (11);

B) transverse arcuate portion (123) that two vertical arch portion (120,120 ') are located to be connected in their upper end (122,122 ');

C) backing cushion (4) of waiting to put on a suit of armour in two vertical arch portion (120,120 ') and transverse arcuate portion (123); And

D) clamp bar (40), the be present through hole (150) of crossing on a side of top of portion (11) of this clampings bar extends and is inserted in the frame (41) of lower end of backing cushion (4).